Finding the Third Proportional to 2,561,706 and 5,519,259

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561,706 : 5,519,259 = 5,519,259 : x
2. Step 2: Convert to fraction form
   2,561,706/5,519,259 = 5,519,259/x
3. Step 3: Cross multiply
   2,561,706x = 5,519,259 × 5,519,259
4. Step 4: Simplify right side
   2,561,706x = 30,462,219,909,081
5. Step 5: Solve for x
   x = 30,462,219,909,081/2,561,706
6. Step 6: Final answer
   x = 11,891,380.16